Fix several warnings reported by Flake8

`E501 line too long` was not fixed because it is better
to fix this error in all files at once.

 # -*- coding: utf-8 -
+import os
+import random
 from datetime import timedelta
+from tempfile import NamedTemporaryFile
+from uuid import uuid4
 from faker import Factory
 from faker.providers.company.en_US import Provider as CompanyProviderEnUs
 from faker.providers.company.ru_RU import Provider as CompanyProviderRuRu
 from munch import munchify
-from uuid import uuid4
-from tempfile import NamedTemporaryFile
-from .local_time import get_now
 from op_faker import OP_Provider
-import os
-import random
+from .local_time import get_now
 
 
 fake_en = Factory.create(locale='en_US')
@@ -116,7 +116,7 @@ def test_tender_data(params, periods=("enquiry", "tender")):
         if params.get('lot_meat'):
             new_feature = test_feature_data()
             new_feature['featureOf'] = "lot"
-            data['lots'][0]['id'] =  data['lots'][0].get('id', uuid4().hex)
+            data['lots'][0]['id'] = data['lots'][0].get('id', uuid4().hex)
             new_feature['relatedItem'] = data['lots'][0]['id']
             data['features'].append(new_feature)
     else:
@@ -130,7 +130,7 @@ def test_tender_data(params, periods=("enquiry", "tender")):
     if params.get('item_meat'):
         new_feature = test_feature_data()
         new_feature['featureOf'] = "item"
-        data['items'][0]['id'] =  data['items'][0].get('id', uuid4().hex)
+        data['items'][0]['id'] = data['items'][0].get('id', uuid4().hex)
         new_feature['relatedItem'] = data['items'][0]['id']
         data['features'].append(new_feature)
     if not data['features']:
@@ -315,9 +315,9 @@ def test_item_data(cpv=None):
     data["description_ru"] = field_with_id("i", data["description_ru"])
     days = fake.random_int(min=1, max=30)
     data["deliveryDate"] = {
-                            "startDate":(get_now() + timedelta(days=days)).isoformat(),
-                            "endDate":(get_now() + timedelta(days=days)).isoformat()
-                           }
+        "startDate": (get_now() + timedelta(days=days)).isoformat(),
+        "endDate": (get_now() + timedelta(days=days)).isoformat()
+    }
     data["deliveryAddress"]["countryName_en"] = translate_country_en(data["deliveryAddress"]["countryName"])
     data["deliveryAddress"]["countryName_ru"] = translate_country_ru(data["deliveryAddress"]["countryName"])
     return munchify(data)
@@ -371,7 +371,6 @@ def test_lot_document_data(document, lot_id):
     return munchify(document)
 
 
-
 def test_tender_data_openua(params):
     # We should not provide any values for `enquiryPeriod` when creating
     # an openUA or openEU procedure. That field should not be present at all.

@@ -6,7 +6,6 @@ from datetime import timedelta
 from dateutil.parser import parse
 from dpath.util import new as xpathnew
 from haversine import haversine
-from iso8601 import parse_date
 from json import load, loads
 from jsonpath_rw import parse as parse_path
 from munch import Munch, munchify